18. William Ding, founder and CEO of NetEase. Net worth: £12.9 billion ($US17.5 billion). Ding founded NetEase in 1997 and it is now one of the world’s biggest mobile games businesses.

17. Laurene Powell Jobs, widow of Steve Jobs. Net worth: £13.9 billion ($US18.9 billion). She founded social impact enterprise Emerson Collective and was recently rumoured to be in talks to back BuzzFeed’s news division.

16. Azim Premji, chairman of Wipro Limited. Net worth: £13.9 billion ($US18.9 billion). Premji is known as the czar of the Indian IT industry.

5. Carlos Slim Helú, director of America Movil. Net worth: £49.7 billion ($US67.5 billion). Helú used to own a $US40 million stake in Shazam and, among a number of assets, controls South American music streaming service Claro Música.